<template>
  <div class="login-container">
    <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form" auto-complete="on"
             label-position="left">
      <div class="title-container">
        <div class="img-v"><img src="../../assets/img/logo.png"></div>
        <h3 class="title">管理员登录</h3>
      </div>
      <el-form-item prop="username">
        <span class="svg-container">
          <svg-icon icon-class="user"/>
        </span>
        <el-input v-model="loginForm.username" name="username" type="text" tabindex="1" auto-complete="on"
                  placeholder="管理员账户"/>
      </el-form-item>

      <el-form-item prop="password">
        <span class="svg-container">
          <svg-icon icon-class="password"/>
        </span>
        <el-input v-model="loginForm.password" :type="passwordType" name="password" auto-complete="on" tabindex="2"
                  show-password placeholder="管理员密码" @keyup.enter.native="handleLogin"/>
      </el-form-item>

      <el-form-item prop="code">
        <span class="svg-container">
          <svg-icon icon-class="lock"/>
        </span>
        <el-input v-model="loginForm.code" auto-complete="off" name="code" tabindex="2" placeholder="验证码"
                  style="width: 60%" @keyup.enter.native="handleLogin"/>
        <div class="login-code">
          <img :src="codeImg" @click="getCode">
        </div>
      </el-form-item>

      <el-button :loading="loading" type="primary" style="width:100%;margin-bottom:30px;height: 44px;margin-top: 20px;"
                 @click.native.prevent="handleLogin">登录
      </el-button>
    </el-form>

    <div class="copyright">
      Copyright © 2020 云南昊邦医药销售有限公司 版权所有 滇ICP备15008475号-1
    </div>
  </div>
</template>

<script>
  import { getKaptcha } from '@/api/login'

  export default {
    name: 'Login',
    data() {
      const validatePassword = (rule, value, callback) => {
        if (value.length < 6) {
          callback(new Error('管理员密码长度应大于6'))
        } else {
          callback()
        }
      }
      return {
        loginForm: {
          username: '',
          password: '',
          code: ''
        },
        codeImg: '',
        loginRules: {
          username: [{ required: true, message: '管理员账户不允许为空', trigger: 'blur' }],
          password: [
            { required: true, message: '管理员密码不允许为空', trigger: 'blur' },
            { validator: validatePassword, trigger: 'blur' }
          ]
        },
        passwordType: 'password',
        loading: false
      }
    },
    watch: {
      $route: {
        handler: function(route) {
          this.redirect = route.query && route.query.redirect
        },
        immediate: true
      }

    },
    created() {
      this.getCode()
      // window.addEventListener('hashchange', this.afterQRScan)
    },
    destroyed() {
      // window.removeEventListener('hashchange', this.afterQRScan)
    },
    methods: {
      getCode() {
        getKaptcha().then(response => {
          this.codeImg = response.data.data
        })
      },
      handleLogin() {
        this.$refs.loginForm.validate(valid => {
          if (valid && !this.loading) {
            this.loading = true
            this.$store.dispatch('LoginByUsername', this.loginForm).then(() => {
              this.loading = false
              this.$router.push({ path: this.redirect || '/' })
            }).catch(response => {
              if (response.data.data) {
                this.codeImg = response.data.data
              }
              this.$notify.error({
                title: '失败',
                message: response.data.errmsg
              })
              this.loading = false
            })
          } else {
            return false
          }
        })
      }
    }
  }
</script>

<style lang="scss">
  /* 修复input 背景不协调 和光标变色 */
  /* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

  $bg: #fff;
  $light_gray: #333;
  $cursor: #333;

  @supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
    .login-container .el-input input {
      color: $cursor;
    }
  }

  /* reset element-ui css */
  .login-container {
    .el-input {
      display: inline-block;
      height: 47px;
      width: 85%;

      input {
        border: 0px;
        -webkit-appearance: none;
        border-radius: 0px;
        padding: 8px 5px 10px 15px;
        color: $light_gray;
        height: 47px;
        caret-color: $cursor;

        &:-webkit-autofill {
          box-shadow: 0 0 0px 1000px $bg inset !important;
          -webkit-text-fill-color: $cursor !important;
        }
      }
    }

    .el-form-item {
      border: 1px solid rgba(255, 255, 255, 0.1);
      background: rgba(0, 0, 0, 0.1);
      border-radius: 5px;
      color: #454545;
    }
  }
</style>

<style lang="scss" scoped>
  $bg: #2d3a4b;
  $dark_gray: #889aa4;
  $light_gray: #666;

  .login-container {
    min-height: 100%;
    width: 100%;
    background-color: $bg;
    overflow: hidden;
    padding-top: 120px;

    .login-form {
      position: relative;
      background-color: #fff;
      width: 520px;
      max-width: 100%;
      padding: 40px 35px 0;
      margin: 0 auto;
      overflow: hidden;
      border-radius: 5px;
    }

    .login-code {
      padding-top: 5px;
      float: right;

      img {
        cursor: pointer;
        vertical-align: middle
      }
    }

    .tips {
      font-size: 14px;
      color: #fff;
      margin-bottom: 10px;

      span {
        &:first-of-type {
          margin-right: 16px;
        }
      }
    }

    .svg-container {
      padding: 6px 5px 6px 15px;
      color: $dark_gray;
      vertical-align: middle;
      width: 30px;
      display: inline-block;
    }

    .title-container {
      position: relative;

      .title {
        font-size: 26px;
        color: $light_gray;
        margin: 0px auto 40px auto;
        text-align: center;
        font-weight: bold;
      }
      .img-v {
        text-align: center;
        margin-bottom: 30px;

        img {
          height: 60px;
        }
      }
    }

    .copyright {
      font-size: 12px;
      color: #fff;
      position: absolute;
      bottom: 0;
      left: 50%;
      transform: translate(-50%, -50%);
      margin-bottom: 20px;
      letter-spacing: 0.6px;

      a {
        font-weight: bold;
        border-bottom: 1px solid #fff;
        font-family: "PingFangSC-Semibold", sans-serif;
      }
    }
  }
</style>

